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118
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Introduction
My research focuses on spatial patterns characterization and on spatial analysis of geographic phenomena. I question the influence of contextual effects on the production of spatial heterogeneity at different scales and environments. This research is based on methods from geomatics, spatial analysis and statistical modelling, and is applied to various disciplinary fields involving environment-society links, such as biogeography, health geography or transport geography.
Skills and Expertise
Additional affiliations
September 2014 - June 2015
September 2013 - June 2014
February 2013 - August 2015
Publications
Publications (118)
La mobilité quotidienne n’est en soi ni favorable, ni défavorable à la santé. Si elle peut faciliter les interactions sociales, l’accès à des services éloignés ou augmenter l’activité physique, elle peut également être à l’origine de pollutions, de propagation d’épidémies ou d’accidents de la circulation.Cet ouvrage présente différentes facettes de...
Background
Mechanisms underlying the associations between changes in the urban environment and changes in health-related outcomes are complex and their study requires specific approaches. We describe the protocol of the interdisciplinary UrbASanté study, which aims to explore how urban interventions can modify environmental exposures (built, social...
The African tropical forests host an inestimable number of resources, including food, medicine, vegetal and animal species. Among them, chimpanzees are threatened with extinction by human activities affecting their habitats, such as forest product harvesting, and/or more directly, snaring and trafficking. We aimed to better understand the spatial d...
ContextTreeline-ecotone spatial patterns and their dynamics reflect underlying processes. Changes in ecotone pattern may reflect changes in natural drivers or land-use practices. However, characterizing these dynamics presents a major challenge, limiting our ability to map, understand and predict changes in the upper limits of mountain forests.Obje...
Background
Mechanisms underlying the associations between changes in the urban environment and changes in health-related outcomes are complex and their study requires specific approaches. We describe the protocol of the interdisciplinary UrbASanté study, which aims to explore how urban interventions can modify environmental exposures (built, social...
Context
Treeline-ecotone spatial patterns and their dynamics reflect underlying processes. Changes in ecotone pattern may reflect changes in climatic drivers or land-use practices. However, characterizing these dynamics presents a major challenge, limiting our ability to map, understand and predict changes in the upper limits of mountain forests....
As an alternative to private car, rail accessibility is part of environmental policies. The effects of light or heavy rail have been widely covered by the literature in urban areas. High-speed rail accessibility has been extensively studied at national or regional scales as well. In-between, only few studies have considered commuter rail accessibil...
Rationale:
While previous studies in environmental epidemiology have focused on single or a few exposures, a holistic approach combining multiple preventable risk factors is needed to tackle the etiology of multifactorial diseases such as asthma.
Objective:
To investigate the association between combined socioeconomic, external environment, earl...
Objectives
The purpose of this study was to assess whether the retail food environment, measured by multiple indicators around home and in activity space, was associated with nutritional quality of food purchases.
Methods
This cross-sectional study included 462 households from a quota sampling survey conducted in the south of France (Montpellier M...
Purpose:
The purpose of this study was to assess whether the retail food environment, measured by multiple indicators around the home and in activity space, was associated with the nutritional quality of food purchases.
Methods:
This cross-sectional study included 462 households from a quota sampling survey conducted in the south of France (Mont...
Background:
The first wave of the COVID-19 pandemic in France was associated with high excess mortality, and anecdotal evidence pointed to differing excess mortality patterns depending on social and environmental determinants. In this study we aimed to investigate the spatial distribution of excess mortality during the first wave of the COVID-19 p...
The use of individual cars and solo driving is a source of negative externalities. The practice of carpooling for commuting could be a solution to tackle environmental, health and congestion problems. The objective of this study was to explore the incentives to encourage carpooling for commuting in the Paris region. Beyond socio-demographics, indiv...
The objective of this study was to explore individual and contextual-level characteristics associated with active (walking and cycling) and public transport as main travel modes for both non-commuting and commuting purposes, in residents of five European urban regions. We also described participant-reported motivations for modal choice for each jou...
Car use generates negative externalities, which are responsible for many health, environmental and economic problems. To tackle this issue, more work is needed to identify better the correlates of car use, especially at the contextual level. In this study, a mobility-focused questionnaire involving 1722 working French adults living in the Paris are...
This paper explores home gardening geography in metropolitan outskirts, seen as a major asset and challenge of the alternative suburban city model. Studies that estimate the domestic production of backyard gardens are scarce, but they all confirm the persistence of an ancient and “ordinary” phenomenon still firmly rooted in the food landscape of th...
Purpose
Both perceived and objectively-measured attributes of the built environment have been related to active transport. They do not refer, however, to the same construct: objective measurements provide an inventory of a neighborhood's active-friendly attributes, while the perceptions of individuals refer to their appraisal of their neighborhood...
Background
In middle- and high-income countries, obesity is positively associated with neighbourhood deprivation. However, the moderating effect of the broader urban residential context on this relationship remains poorly understood.
Methods
In this study, we have examined the nonlinear and geographically varying relationship between neighbourhoo...
The study of subclinical psychotic manifestations (quantitative schizotypy) represents clinical and public health issues. These manifestations are more common than schizophrenia or depression, but rarely identified while it impacts the quality of life. Screening schizotypy in the general population would make it possible to propose prevention strat...
Aim
Most studies focusing on the alpine tree line responses to climate warming have used either the tree densification within the ecotone or its elevational upshift as indicators. However, it is acknowledged that the relationship between densification and upshift is spatially heterogeneous, making inferences and comparability among studies tricky....
In this empirical article, we seek to reveal the effect of accessibility to passenger railway stations in land capitalization. The stakes are crucial, as urban development in many OECD countries has been built around the individual car, favoring sprawled cities. The proximity to a railway station may thus be sought by households engaged in a land a...
La pertinence d’une approche nomothétique comparée à une approche idiographique constitue toujours l’objet de débats en géographie. Ces débats consistent finalement à opposer une géographie régionale à une géographie des lieux alors qu’on sait, en pratique, que les deux ne sont pas incompatibles : l’identification de singularités locales ne comprom...
The transport sector and the use of individual cars in particular are sources of negative externalities. Shared mobility could form a solution to this issue. This study contributes to a better understanding of the implementability of such a shared mobility by exploring the potential determinants of the use of carpooling and carsharing for commuting...
À l’ère du big data et du développement fulgurant des nouvelles technologies, jamais les données spatiales n’ont été si nombreuses et aussi facilement accessibles.Toutefois, leur compréhension et leur mobilisation ne sont pas sans difficulté.
Ce manuel a pour objectif d’apporter un cadre rigoureux de lecture et d’analyse des données spatiales, sous...
Revue de livres | 2018 Loonis V., Bellefon M.-P. (dir.), 2018, Manuel d'analyse spatiale. Théorie et mise en oeuvre pratique avec R, Insee Méthodes n° 131, Insee, Eurostat, 392 p. Thierry Feuillet Édition électronique
Background:
Dietary polyphenols are suggested anti-obesogenic agents. Prospective evidence in general populations of an association between polyphenol intakes and anthropometry is lacking.
Objective:
To assess the associations between dietary polyphenol intakes and changes in body mass index (BMI) and waist circumference (WC) over a 6-year perio...
Innovative solutions have been implemented to promote sustainable mobility in urban areas. In the Nantes area (northwestern part of France), alternatives to single-occupant car use have increased in the past few years. In the urban area, there is an efficient public transport supply, including tramways and a “busway” (Bus Rapid Transit), as well as...
In Iceland there are numerous rock-slope failures, especially in the Tertiary basaltic formations of the northern, eastern and northwestern regions. The temporal pattern of rock-slope failures is fundamental for understanding post-glacial events. In the Skagafjörður district, central northern Iceland, 17 rock-slope failures were investigated to det...
The objectives were (1) to define physical activity (PA) and sedentary behaviors (SB) patterns in daily life contexts (work, leisure, and transportation) in French working women from NutriNet-Santé web-cohort and (2) to identify pattern(s) of active transportation and their individual, social, and environmental correlates. 23,432 participants compl...
Background
Active transportation has been associated with favorable health outcomes. Previous research highlighted the influence of neighborhood educational level on active transportation. However, little is known regarding the effect of commuting distance on social disparities in active commuting. In this regard, women have been poorly studied. Th...
For several decades, geomorphologists have focused on the functioning of geomorphic systems after deglaciation. The relative importance of paraglacial vs. periglacial processes has been highly debated. At present,
the development of dating techniques allows to contribute to this debate. We reconstruct in this paper the geomorphic evolution of Tinda...
This cross-sectional study aimed to determine which objective built environmental factors, identified using a virtual neighbourhood audit, were associated with cycling for transport in adults living in five urban regions across Europe. The moderating role of age, gender, socio-economic status and country on these associations was also investigated....
Introduction et but de l’etude
La promotion de la pratique de l’activite physique, notamment par le transport actif (marche, velo), est devenue un enjeu prioritaire des politiques de nutrition de sante publique. Ces dernieres annees, des etudes ont montre l’influence de determinants sociaux sur la pratique du transport actif, tant a l’echelle indiv...
It is generally accepted that active mobility, mainly walking and cycling, contributes to peo-ple's physical and mental health. One of the current challenges is to improve our understanding of this type of behaviour. This study aims to identify factors from the daily-life environment that may be related to active mobility behaviours, in order to de...
Literature search strategy.
(PDF)
Questionnaires names and reviewed articles.
(PDF)
Supplementary Table 1: Description of the socioecological variables. Supplementary Table 2: Unadjusted associations between perceived environmental
characteristics, representation of transportation modes, physical activity, and clusters of physical activity and sedentary behaviors. Results from multinomial
logistic regression model using cluster...
Walking, as both a major mode of transport and the most common form of every-day physical activity, deserves further attention in health-related transportation studies. In this paper, we focused on the built environmental correlates of walking for errands and leisure in a sample of 4979 adults (Paris, France) through a cross-sectional study based o...
Background
Obesity-related lifestyle behaviors usually co-exist but few studies have examined their simultaneous relation with body weight. This study aimed to identify the hierarchy of lifestyle-related behaviors associated with being overweight in adults, and to examine subgroups so identified.
Methods
Data were obtained from a cross-sectional s...
Recent research in northern Iceland has highlighted a significant period of rock slope instability during the early Holocene due to the combined effects of postglacial rebound, relative sea-level fall, and glacially oversteepened mountain slopes. Using the Vatn landslide (Skagafjörður, central northern Iceland) as an example, this paper focuses on...
In Iceland, the Late Weichselian deglaciation led to paraglacial topographic readjustments in the form of extensive deep-seated gravitational slope deformation (DSGSD) and large rockslope failures (landslides and rock-avalanches). Here we provide age estimates for the Stífluhólar landslide (Tröllaskagi Peninsula, Northern Central Iceland), which in...
The neighbourhood is recognized as an important unit of analysis in research on the relation between obesogenic environments and development of obesity. One important challenge is to define the limits of the residential neighbourhood, as perceived by study participants themselves, in order to improve our understanding of the interaction between con...
Virtual audit (using tools such as Google Street View) can help assess multiple characteristics of the physical environment. This exposure assessment can then be associated with health outcomes such as obesity. Strengths of virtual audit include collection of large amount of data, from various geographical contexts, following standard protocols. Us...
Regular cycling for transport is an important potential contributor to daily physical activity among adults. Characteristics of the physical environment are likely to influence cycling for transport. The current study investigated associations between perceived physical environmental neighbourhood factors and adults' cycling for transport across fi...
We compared ecometric neighbourhood scores of social capital (contextual variation) to mean neighbourhood scores (individual and contextual variation), using several health‐related outcomes (i.e. self‐rated health, weight status and obesity‐related behaviours).
Data were analysed from 5,900 participants in the European SPOTLIGHT survey. Factor anal...
Findings from research on the association between the built environment and obesity remain equivocal but may be partly explained by differences in approaches used to characterize the built environment. Findings obtained using subjective measures may differ substantially from those measured objectively. We investigated the agreement between perceive...
Objectives: We investigated the association of various classes and subclasses of polyphenol intakes with body mass index (BMI), waist circumference (WC), cardiovascular and all-causes mortality in the SU.VI.MAX cohort. Methods: Polyphenol intakes were estimated using the detailed Phenol-Explorer Database and associations with mortality were assesse...
Background
Increasing active transport behavior (walking, cycling) throughout the life-course is a key element of physical activity promotion for health. There is, however, a need to better understand the correlates of specific domains of walking and cycling to identify more precisely at-risk populations for public health interventions. In addition...
A set of children’s maps on the solid-surfaced planetary bodies of the solar system was developed in the framework of the program Europlanet 2012. The surfaces of the six bodies were illustrated by planetary scientists and graphic artists. This is the first project in which such detailed, hand-drawn lunar and planetary maps were created specificall...
Background
According to the social ecological model of health-related behaviors, it is now well accepted that environmental factors influence habitual physical activity. Most previous studies on physical activity determinants have assumed spatial homogeneity across the study area, i.e. that the association between the environment and physical activ...